package com.example.demo;




import org.springframework.boot.CommandLineRunner;
import org.springframework.core.env.Environment;

import java.util.Objects;

public class CustomCommandLineRunner implements CommandLineRunner {
    Environment env;
    public CustomCommandLineRunner(Environment env){
        this.env =env;
    }

    @Override
    public void  run(String ...args){
        System.out.println("利用Spring Boot自动装配的CommandLineRunner:");
        System.out.println("生成随机字符串:".concat(Objects.requireNonNull(env.getProperty("random."))));
    }
}
